// NotFound attempts to retrieve a package when not found in the local vendor/
// folder. It will attempt to get it from the remote location info.
func (m *MissingPackageHandler) NotFound(pkg string, addTest bool) (bool, error) {
root := util.GetRootFromPackage(pkg)
// Skip any references to the root package.
if root == m.Config.Name {
return false, nil
}
dest := filepath.Join(m.destination, root)
// This package may have been placed on the list to look for when it wasn't
// downloaded but it has since been downloaded before coming to this entry.
if _, err := os.Stat(dest); err == nil {
// Make sure the location contains files. It may be an empty directory.
empty, err := gpath.IsDirectoryEmpty(dest)
if err != nil {
return false, err
}
if empty {
msg.Warn("%s is an existing location with no files. Fetching a new copy of the dependency.", dest)
msg.Debug("Removing empty directory %s", dest)
err := os.RemoveAll(dest)
if err != nil {
msg.Debug("Installer error removing directory %s: %s", dest, err)
return false, err
}
} else {
msg.Debug("Found %s", dest)
return true, nil
}
}
msg.Info("Fetching %s into %s", pkg, m.destination)
d := m.Config.Imports.Get(root)
if d == nil && addTest {
d = m.Config.DevImports.Get(root)
}
// If the dependency is nil it means the Config doesn't yet know about it.
if d == nil {
d, _ = m.Use.Get(root)
// We don't know about this dependency so we create a basic instance.
if d == nil {
d = &cfg.Dependency{Name: root}
}
if addTest {
m.Config.DevImports = append(m.Config.DevImports, d)
} else {
m.Config.Imports = append(m.Config.Imports, d)
}
}
if err := VcsGet(d, dest, m.home, m.cache, m.cacheGopath, m.useGopath); err != nil {
return false, err
}
return true, nil
}
// VcsGet figures out how to fetch a dependency, and then gets it.
//
// VcsGet installs into the dest.
func VcsGet(dep *cfg.Dependency, dest, home string, cache, cacheGopath, useGopath bool) error {
// When not skipping the $GOPATH look in it for a copy of the package
if useGopath {
// Check if the $GOPATH has a viable version to use and if so copy to vendor
gps := gpath.Gopaths()
for _, p := range gps {
d := filepath.Join(p, "src", dep.Name)
if _, err := os.Stat(d); err == nil {
empty, err := gpath.IsDirectoryEmpty(d)
if empty || err != nil {
continue
}
repo, err := dep.GetRepo(d)
if err != nil {
continue
}
// Dirty repos have uncomitted changes.
if repo.IsDirty() {
continue
}
// Having found a repo we copy it to vendor and update it.
msg.Info("Copying package %s from the GOPATH.", dep.Name)
msg.Debug("Found %s in GOPATH at %s. Copying to %s", dep.Name, d, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
// Update the repo in the vendor directory
msg.Debug("Updating %s, now in the vendor path at %s", dep.Name, dest)
repo, err = dep.GetRepo(dest)
if err != nil {
return err
}
err = repo.Update()
if err != nil {
return err
}
// If there is no reference set on the dep we try to checkout
// the default branch.
if dep.Reference == "" {
db := defaultBranch(repo, home)
if db != "" {
err = repo.UpdateVersion(db)
if err != nil && msg.Default.IsDebugging {
msg.Debug("Attempting to set the version on %s to %s failed. Error %s", dep.Name, db, err)
}
}
}
return nil
}
}
}
// When opting in to cache in the GOPATH attempt to do put a copy there.
if cacheGopath {
// Since we didn't find an existing copy in the GOPATHs try to clone there.
gp := gpath.Gopath()
if gp != "" {
d := filepath.Join(gp, "src", dep.Name)
if _, err := os.Stat(d); os.IsNotExist(err) {
// Empty directory so we checkout out the code here.
msg.Debug("Retrieving %s to %s before copying to vendor", dep.Name, d)
repo, err := dep.GetRepo(d)
if err != nil {
return err
}
repo.Get()
branch := findCurrentBranch(repo)
if branch != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cacheCreateKey(loc)
if err == nil {
msg.Debug("Saving default branch for %s", repo.Remote())
c := cacheRepoInfo{DefaultBranch: branch}
err = saveCacheRepoData(key, c, home)
if msg.Default.IsDebugging && err == errCacheDisabled {
msg.Debug("Unable to cache default branch because caching is disabled")
}
}
}
msg.Debug("Copying %s from GOPATH at %s to %s", dep.Name, d, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
return nil
}
}
}
// If opting in to caching attempt to put it in the cache folder
if cache {
// Check if the cache has a viable version and try to use that.
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cacheCreateKey(loc)
if err == nil {
d := filepath.Join(home, "cache", "src", key)
repo, err := dep.GetRepo(d)
if err != nil {
return err
}
// If the directory does not exist this is a first cache.
if _, err = os.Stat(d); os.IsNotExist(err) {
msg.Debug("Adding %s to the cache for the first time", dep.Name)
err = repo.Get()
if err != nil {
return err
}
branch := findCurrentBranch(repo)
if branch != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cacheCreateKey(loc)
if err == nil {
msg.Debug("Saving default branch for %s", repo.Remote())
c := cacheRepoInfo{DefaultBranch: branch}
err = saveCacheRepoData(key, c, home)
if err == errCacheDisabled {
msg.Debug("Unable to cache default branch because caching is disabled")
} else if err != nil {
msg.Debug("Error saving %s to cache. Error: %s", repo.Remote(), err)
}
}
}
} else {
msg.Debug("Updating %s in the cache", dep.Name)
err = repo.Update()
if err != nil {
return err
}
}
msg.Debug("Copying %s from the cache to %s", dep.Name, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
return nil
} else {
msg.Warn("Cache key generation error: %s", err)
}
}
// If unable to cache pull directly into the vendor/ directory.
repo, err := dep.GetRepo(dest)
if err != nil {
return err
}
gerr := repo.Get()
// Attempt to cache the default branch
branch := findCurrentBranch(repo)
if branch != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cacheCreateKey(loc)
if err == nil {
msg.Debug("Saving default branch for %s", repo.Remote())
c := cacheRepoInfo{DefaultBranch: branch}
err = saveCacheRepoData(key, c, home)
if err == errCacheDisabled {
msg.Debug("Unable to cache default branch because caching is disabled")
} else if err != nil {
msg.Debug("Error saving %s to cache - Error: %s", repo.Remote(), err)
}
}
}
return gerr
}
// VcsUpdate updates to a particular checkout based on the VCS setting.
func VcsUpdate(dep *cfg.Dependency, dest, home string, cache, cacheGopath, useGopath, force, updateVendored bool) error {
// If the dependency has already been pinned we can skip it. This is a
// faster path so we don't need to resolve it again.
if dep.Pin != "" {
msg.Debug("Dependency %s has already been pinned. Fetching updates skipped.", dep.Name)
return nil
}
msg.Info("Fetching updates for %s.\n", dep.Name)
if filterArchOs(dep) {
msg.Info("%s is not used for %s/%s.\n", dep.Name, runtime.GOOS, runtime.GOARCH)
return nil
}
// If destination doesn't exist we need to perform an initial checkout.
if _, err := os.Stat(dest); os.IsNotExist(err) {
if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else {
// At this point we have a directory for the package.
// When the directory is not empty and has no VCS directory it's
// a vendored files situation.
empty, err := gpath.IsDirectoryEmpty(dest)
if err != nil {
return err
}
_, err = v.DetectVcsFromFS(dest)
if updateVendored == false && empty == false && err == v.ErrCannotDetectVCS {
msg.Warn("%s appears to be a vendored package. Unable to update. Consider the '--update-vendored' flag.\n", dep.Name)
} else {
if updateVendored == true && empty == false && err == v.ErrCannotDetectVCS {
// A vendored package, no repo, and updating the vendored packages
// has been opted into.
msg.Info("%s is a vendored package. Updating.", dep.Name)
err = os.RemoveAll(dest)
if err != nil {
msg.Error("Unable to update vendored dependency %s.\n", dep.Name)
return err
} else {
dep.UpdateAsVendored = true
}
if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
return nil
}
repo, err := dep.GetRepo(dest)
// Tried to checkout a repo to a path that does not work. Either the
// type or endpoint has changed. Force is being passed in so the old
// location can be removed and replaced with the new one.
// Warning, any changes in the old location will be deleted.
// TODO: Put dirty checking in on the existing local checkout.
if (err == v.ErrWrongVCS || err == v.ErrWrongRemote) && force == true {
var newRemote string
if len(dep.Repository) > 0 {
newRemote = dep.Repository
} else {
newRemote = "https://" + dep.Name
}
msg.Warn("Replacing %s with contents from %s\n", dep.Name, newRemote)
rerr := os.RemoveAll(dest)
if rerr != nil {
return rerr
}
if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else if err != nil {
return err
} else if repo.IsDirty() {
return fmt.Errorf("%s contains uncommited changes. Skipping update", dep.Name)
} else {
// Check if the current version is a tag or commit id. If it is
// and that version is already checked out we can skip updating
// which is faster than going out to the Internet to perform
// an update.
if dep.Reference != "" {
version, err := repo.Version()
if err != nil {
return err
}
ib, err := isBranch(dep.Reference, repo)
if err != nil {
return err
}
// If the current version equals the ref and it's not a
// branch it's a tag or commit id so we can skip
// performing an update.
if version == dep.Reference && !ib {
msg.Info("%s is already set to version %s. Skipping update.", dep.Name, dep.Reference)
return nil
}
}
if err := repo.Update(); err != nil {
msg.Warn("Download failed.\n")
return err
}
}
}
}
return nil
}
// VcsVersion set the VCS version for a checkout.
func VcsVersion(dep *cfg.Dependency, vend string) error {
// If the dependency has already been pinned we can skip it. This is a
// faster path so we don't need to resolve it again.
if dep.Pin != "" {
msg.Debug("Dependency %s has already been pinned. Setting version skipped.", dep.Name)
return nil
}
cwd := filepath.Join(vend, dep.Name)
// If there is no refernece configured there is nothing to set.
if dep.Reference == "" {
// Before exiting update the pinned version
repo, err := dep.GetRepo(cwd)
if err != nil {
return err
}
dep.Pin, err = repo.Version()
if err != nil {
return err
}
return nil
}
// When the directory is not empty and has no VCS directory it's
// a vendored files situation.
empty, err := gpath.IsDirectoryEmpty(cwd)
if err != nil {
return err
}
_, err = v.DetectVcsFromFS(cwd)
if empty == false && err == v.ErrCannotDetectVCS {
msg.Warn("%s appears to be a vendored package. Unable to set new version. Consider the '--update-vendored' flag.\n", dep.Name)
} else {
repo, err := dep.GetRepo(cwd)
if err != nil {
return err
}
ver := dep.Reference
// Referenes in Git can begin with a ^ which is similar to semver.
// If there is a ^ prefix we assume it's a semver constraint rather than
// part of the git/VCS commit id.
if repo.IsReference(ver) && !strings.HasPrefix(ver, "^") {
msg.Info("Setting version for %s to %s.\n", dep.Name, ver)
} else {
// Create the constraing first to make sure it's valid before
// working on the repo.
constraint, err := semver.NewConstraint(ver)
// Make sure the constriant is valid. At this point it's not a valid
// reference so if it's not a valid constrint we can exit early.
if err != nil {
msg.Warn("The reference '%s' is not valid\n", ver)
return err
}
// Get the tags and branches (in that order)
refs, err := getAllVcsRefs(repo)
if err != nil {
return err
}
// Convert and filter the list to semver.Version instances
semvers := getSemVers(refs)
// Sort semver list
sort.Sort(sort.Reverse(semver.Collection(semvers)))
found := false
for _, v := range semvers {
if constraint.Check(v) {
found = true
// If the constrint passes get the original reference
ver = v.Original()
break
}
}
if found {
msg.Info("Detected semantic version. Setting version for %s to %s.\n", dep.Name, ver)
} else {
msg.Warn("Unable to find semantic version for constraint %s %s\n", dep.Name, ver)
}
}
if err := repo.UpdateVersion(ver); err != nil {
msg.Error("Failed to set version to %s: %s\n", dep.Reference, err)
return err
}
dep.Pin, err = repo.Version()
if err != nil {
return err
}
}
return nil
}
// VcsUpdate updates to a particular checkout based on the VCS setting.
func VcsUpdate(dep *cfg.Dependency, force bool, updated *UpdateTracker) error {
// If the dependency has already been pinned we can skip it. This is a
// faster path so we don't need to resolve it again.
if dep.Pin != "" {
msg.Debug("Dependency %s has already been pinned. Fetching updates skipped.", dep.Name)
return nil
}
if updated.Check(dep.Name) {
msg.Debug("%s was already updated, skipping.", dep.Name)
return nil
}
updated.Add(dep.Name)
if filterArchOs(dep) {
msg.Info("%s is not used for %s/%s.\n", dep.Name, runtime.GOOS, runtime.GOARCH)
return nil
}
key, err := cp.Key(dep.Remote())
if err != nil {
msg.Die("Cache key generation error: %s", err)
}
location := cp.Location()
dest := filepath.Join(location, "src", key)
// If destination doesn't exist we need to perform an initial checkout.
if _, err := os.Stat(dest); os.IsNotExist(err) {
msg.Info("--> Fetching %s.", dep.Name)
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else {
// At this point we have a directory for the package.
msg.Info("--> Fetching updates for %s.", dep.Name)
// When the directory is not empty and has no VCS directory it's
// a vendored files situation.
empty, err := gpath.IsDirectoryEmpty(dest)
if err != nil {
return err
}
_, err = v.DetectVcsFromFS(dest)
if empty == true && err == v.ErrCannotDetectVCS {
msg.Warn("Cached version of %s is an empty directory. Fetching a new copy of the dependency.", dep.Name)
msg.Debug("Removing empty directory %s", dest)
err := os.RemoveAll(dest)
if err != nil {
return err
}
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else {
repo, err := dep.GetRepo(dest)
// Tried to checkout a repo to a path that does not work. Either the
// type or endpoint has changed. Force is being passed in so the old
// location can be removed and replaced with the new one.
// Warning, any changes in the old location will be deleted.
// TODO: Put dirty checking in on the existing local checkout.
if (err == v.ErrWrongVCS || err == v.ErrWrongRemote) && force == true {
newRemote := dep.Remote()
msg.Warn("Replacing %s with contents from %s\n", dep.Name, newRemote)
rerr := os.RemoveAll(dest)
if rerr != nil {
return rerr
}
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
repo, err = dep.GetRepo(dest)
if err != nil {
return err
}
} else if err != nil {
return err
} else if repo.IsDirty() {
return fmt.Errorf("%s contains uncommitted changes. Skipping update", dep.Name)
}
ver := dep.Reference
if ver == "" {
ver = defaultBranch(repo)
}
// Check if the current version is a tag or commit id. If it is
// and that version is already checked out we can skip updating
// which is faster than going out to the Internet to perform
// an update.
if ver != "" {
version, err := repo.Version()
if err != nil {
return err
}
ib, err := isBranch(ver, repo)
if err != nil {
return err
}
// If the current version equals the ref and it's not a
// branch it's a tag or commit id so we can skip
// performing an update.
if version == ver && !ib {
msg.Debug("%s is already set to version %s. Skipping update.", dep.Name, dep.Reference)
return nil
}
}
if err := repo.Update(); err != nil {
msg.Warn("Download failed.\n")
return err
}
}
}
return nil
}
